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Short rib-polydactyly syndrome, Majewski type

H Chen, S S Yang, E Gonzalez

American Journal of Medical Genetics

|January 1, 1980

Summary

This summary is machine-generated.

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Short rib-polydactyly syndrome type 2 (Majewski) is a severe genetic disorder causing dwarfism and multiple congenital anomalies. This case highlights characteristic skeletal and extraskeletal findings, suggesting autosomal recessive inheritance.

Area of Science:

Medical Genetics
Developmental Biology
Pediatric Pathology

Background:

Short rib-polydactyly syndrome (SRPS) encompasses a group of lethal skeletal dysplasias.
SRPS type 2, also known as Majewski osteodysplastic primordial dwarfism, is characterized by severe micromelia and polydactyly.

Observation:

A term infant presented with severe dwarfism and features consistent with SRPS type 2.
Skeletal anomalies included extremely short ribs, disproportionate micromelia (ovoid tibiae), and pre- and post-axial polydactyly.
Extraskeletal findings encompassed hydrops, cleft lip, laryngeal malformations, pulmonary hypoplasia, renal cysts, ambiguous genitalia, and central nervous system abnormalities.

Findings:

Microscopic examination revealed disorganized endochondral ossification in cartilage.

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The constellation of skeletal and extraskeletal anomalies aligns with the diagnostic criteria for Majewski osteodysplastic primordial dwarfism.

Parental consanguinity was noted, supporting a genetic etiology.

Implications:

This case underscores the phenotypic variability and severity of SRPS type 2.
Understanding these complex genetic disorders is crucial for genetic counseling and prenatal diagnosis.
Further research into the molecular mechanisms of SRPS can inform therapeutic strategies.